Abstract: A personal portable painless lancing device and a blood glucose meter using the same, which can lance at the minimum without any pain and use it to measure the blood glucose. The minimum painless lancing device using an Er:YAG laser includes an Er:YAG laser beam-generating section in which the laser beam is generated to punch skin and radiated in a single direction; an adapter installed at the front end of the Er:YAG laser beam-generating section so that the laser beam can be locally concentrated on a skin punch portion; a skin adhesion cap installed at the front end of the adapter so that it can be easily detached, and can reduce the contamination of the Er:YAG laser beam-generating section, which is produced at the time of the lancing, and the danger due to the reuse of it among the patients of lancing; and a case to accommodate the Er:YAG laser beam-generating section and the adapter therein.